rename: drop '-lora-' segment from all model names + capitalize v1.5 size

fix: Lightning Studio kwargs + Kaggle title-slug mismatch

fix: dataset-mirror schema extractor — handle messages/ShareGPT/DPO formats

feat: Surrogate-1 model = PRIVATE on HF Hub (proprietary axentx asset)

fix: lightning use Python SDK (not deprecated 'lightning run app' CLI)

trigger: rebuild for LIGHTNING_* secrets

fix: lightning-trainer env name LIGHTNING_USER_KEY -> LIGHTNING_API_KEY

feat: 3-track training pipeline — Kaggle T4 + Lightning H200 + (Modal pending)